1994408207 has 16 divisors (see below), whose sum is σ = 2311267200. Its totient is φ = 1701894240.

The previous prime is 1994408197. The next prime is 1994408231. The reversal of 1994408207 is 7028044991.

It is a cyclic number.

It is not a de Polignac number, because 1994408207 - 2⁸ = 1994407951 is a prime.

It is a super-2 number, since 2×1994408207² = 7955328192297909698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994408267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20993 + ... + 66554.

It is an arithmetic number, because the mean of its divisors is an integer number (144454200).

Almost surely, 2^1994408207 is an apocalyptic number.

1994408207 is a deficient number, since it is larger than the sum of its proper divisors (316858993).

1994408207 is a wasteful number, since it uses less digits than its factorization.

1994408207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87686.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1994408207 is about 44658.7976439133. The cubic root of 1994408207 is about 1258.7457509241.

The spelling of 1994408207 in words is "one billion, nine hundred ninety-four million, four hundred eight thousand, two hundred seven".